Posts Tagged cuda

Ajax model meets bunny

A classic meeting in computer graphics, render time 3 min using CUDA.

A classic meeting in computer graphics, render time 3 min using CUDA.

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Real time finite element modelling using CUDA

Here is a little movie showing real time simulation of non-linear elastic material properties using the Total Lagrangian Explicit Dynamic FEM. Three different sets of material parameters were used. Our implementation is done in CUDA. Thanks to Brian Bunch Christensen and Jens Rimestad for cooperation on the implementation.

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4. DIVISION

We are playing with image based lighting

We are playing with image based lighting

division_4

Interactive 4. division.

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More raytracing

Screenshot from our Lightsky ray tracer

Screenshot from our Lightsky ray tracer

We areĀ  playing around with our CUDA ray tracing software. The design philosophy is to create a real-time ray tracing experience that allows the user to play with the visual parameters and get an instant feedback. This is not something revolutionary but ray tracing is such a flexible rendering technique, so the basic software can be used in a lot areas. In this demo the user can change and update the material properties at runtime.

We finally found a decent model :-) .

Refraction and diffuse materials

Refraction and diffuse materials, rendering time 45 sec.

But we still like some good old programmers art. The above image is a rendering that uses ambient occlusion together with classic ray tracing.

No ray tracing post without Sponza!

No ray tracing post without Sponza!

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Smoke rendering software

Screenshot from the demo

Screenshot from the demo

Here is a tech demo of our Cuda smoke visualizer software. The software demonstrates real-time interaction and visualization with a smoke data set. It is possible to adjust several parameters such as density and lighting position. To download press HERE.

Screenshot of a more complex model.

Additional screenshot from the demo


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Fun with Photonmapping

Photon mapping

Photon mapping

Our first attempt to use photonmapping in our Cuda raytracer, 300 samples pr pixel, 1200×800, final image rendering time 65 secs.

indirectlight

Here is the famous sponza scene in a 400 pixel pr sample rendering, without and with photonmapping. At this moment this takes a few minutes

to render, but we hope to improve on the rendering time when we learn a little more about CUDA.

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Ray marching smoke

cool_smoke

Nice real-time smoke visualization, rendered by our CUDA tracer including a clear sky model. The smoke dataset was delivered by Michael Bang and Brian Bunch Christensen from the Department of Computer Science, University of Aarhus.

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Short video preview of our technique.

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Raytracing on the GPU

We have recently begun initial experiments and implementation of a GPU assisted raytracer (through CUDA). Our vision is a progressive global illumination renderer with real time updates.

CUDA raytracer - pathtracing, lambertian only

CUDA raytracer - pathtracing, lambertian only

CUDA raytracer - refraction and reflection test

CUDA raytracer - refraction and reflection test

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